The inner ear structures, including the cochlea, semi-circular canals and internal auditory canal are unremarkable on the right. The vascular structures are intact. In the left ear, the external canal is clear with a mildly thickened and retracted tympanic membrane. A small amount of soft tissue density is noted opacifying the anterior portion of the mesotympanum without evidence for bony destruction. Bilateral myringotomy tubes are noted.